Toolholder



June 6, 1950 Filed May 23, 1946 C. l BOSKET TOOLHOLDER 2 Sheets-Sheet 1 INVENTOR Y c. SOS/(ET Patented June 6, 1950 UNITED STATES P A-TENT OFFICE 71,510,544}; j V. a

Y TOOLHOLDER Chester '1. Bosket, Union, N: Y'.,assi'gnort0iInteri-' .nationalqBusiness' Machines Gorporation,; 'New York, N. Y., incorporation-of New York Application May 2 3, 194e,ls ii m6; 6711357 2 Claims,

This invention relates "to improvements in. dc.- vice's 'for holding cutting tool's and morespecificalllyto atbol holder with a; series 'o'f 'relatively adjustablesupports'foi'fvarying the settingof a diamnd-edged cutter for minute angular'and linear'adj'us tiiient si In'tlie' finishing of metallic cylinders or'rolls foiuse as rdto'gravureelectros, it is necessary to prepar'th' cylindrical surface with a smooth finish. Not only'isthe'surface'finish of a critical nature-but" the outside diameter of such rolls miisfh held to' cldse tolerances. The roll is turned downwitha'rcu'gh cut'anda finishing. cut is taken by the diamond tipped'tool' moved par allel to the axis of the roll but at afixed' radial distance. It was "foundthat changes'in setting ofthe diamondip'ointedtool'were difiicult" to make to securefa better cutting an'gleand changes in outside diameter the work piece. "Hereto fore, it was required that the cutter beadjusted by hand and hourswere sometimes required to Obtain the proper adj stmentorthe' tOOl. An object of the invention is to provide a; tool holder with adjustment devices for making 'mi-' nute changes in thefaiiial and angular "relation of the tool with respect'to the holder. 1

Another obj ectoi "the invention isto form the body of a toolholdingfram'e of a number 'ofrela tively' movable parts to secure as many'as five difierenflinear; axiafan'd angular changes in th position ofthe cuttin'g' point of the tool;

" Another obj ect' of the invention is the'provisio'n of a tool holdingframe having vertical and horizontal pivots for swinging the cutting edge in finely controlled arcs' opposit'e the workpiece.

Other obje'ctsof the invention will be pointed out in' the following description and claims and illustratedti'n the suic'ompanyingdrawings, which disclose;v by :way of examplesyth principle of the invention and the best mode; whichh as- "been 'con templated, of applyingjtliat' principle.

In the drawings: 1 Fig." 1 'is a'plan view'or the tool holder device. Fig. 2 isa' side elevation" view of the tool holder partly in a section taken along lines 22 in Fig. 1.'

"Fig. 3. isa. sectional elevation 'view taken along lines33inFig.1. .7 I ".Fig. 4 is an end" elevation view partly, in section taken along lines H'in Flg'.

Fig. 5 is adetail section view taken, alongv lines i+5inliig.3.v r 1 :-The cutting tool; I0 is shown in Fig.3 as a cylindrical membjerhavinga diamond tip ll 'se-.

cureri-terthei'iightzjendicggtheztocland.arranged 5g 13113;? itjfgglljtglflakmg with cutting surfaces'at the proper'anglefor'cooperation withfa work 'pie'ce'assem'bly' enema chine'tool' such asa lathe; Thistip "l lcouldbe formed of""'sorne 'otherhard material such as carboloy or tungsten steel' toibrn'i'a' cutting edge; The tool is sen 't'obe assembled in a cylindrical tool'holder Ithavirig an enlarged head 61' flange [3 through which theto'ol lllproject s. The rear end of "cylinder '12 is formed "with o; shoulder which is notched" with a 'keyway so" that'a worm gear 15 can .ibe 'a's'sembled thereon. The left end of cylinder il 2 fist threaded: on'fext'e'nsionfln" so that'the nut '16'"maybe prssedagainst awasher l1; to'h'old theiworin geaffi on the cylinder; l i Through the center" of cylinder? l2'there 'ex' t'nds? an elongated screw? "l8, "'theinner" endof which "abuts against the left endwf the tool "1 0 within the cylindrical opening l9 cut to receive tool 10.?icyli'ndr I2 is threaded to receive screw l8t'and the outer erid'bfi the screw is'notched soi'that it may be 'engag'edfo'r rotation to ad just the tool position axially for relatively'coarse settings which are refined by other linear "ad-f justing 'meaiis 'fto"be described" hereiri'afti'fi In Figx-Z; it isfseen'that a set screw 2| extends through'the'. enlarged 'flange" I3 "Of the cylinder for "holding t'ool lll'i'relalt'iveto ith'ei cylinder" I 2: InFi'g; 2 it is also noted that the outer periph cry of: the flange 13 'is-scribed with'a series of adj ustinent control lines for indicating-and regulatin'g the" eit'ent of angular: adjustment of the cylindrical tool" holder. 7 These 'lines" 22 "are astsociated with a single line "23 (Fig; Dinarked on a'platfdrm 19 of a tool'slide'block'fl holding the cylinder' I2 "and with reference'to which the cy1-. inderi is given angular adjustment through the wormgear l5. '7 'As shown in Fig; \1,:one en'df'oflthe slidelol'o'ck 24 is formed with'apair of extending bearing arihs 125,126. through .which' there 'extendsa rod 21 carrying a Worm wheelt-28"fiXed thereon with'-' iiithe openingfformed between the arms. Attached; to. red 21 outside 'armi zfi is aknurled fin-v geFpiece- H-foirotating the worm-zato-change the, position; of the cooperating worm wheel l5 (-Fig; 3) and the attached cylindrical tool -holder I2; ;Theextent 'of'adjustmenVvaried by move mentofknob 29 is observed by'noting the change in relationship between theifixed 'line23 and the adjustment lines 22 provided on the periphery of theflange I30f the'rotatable holder; T When the d'esired'degree of adjustment is"cb:- tained, the cylindrical "holder I2'is clamped'i'n position by meansof the devices shown fin'Figl. 5.

a horizontal cylindrical opening directly above the opening provided for holder l2 and at right angles thereto. Within this horizontal opening, there is fitted a pair of wedges 30 and 3|, the former being threaded to receive a clamping bolt 32 and the latter formed with a hole through which the bolt extends. Previous to the use of the worm gear arrangement for ad ustment, bolt 32 is loosened,- and after theproper setting is made, this bolt is again tightened to draw the two wedge pieces together to force the cylinder E2 downward so that it is clamped in the adjusted position.

It is noted from the foregoing-spurtiflnmfthe 4 Attached to the side of projection 40 of platform 36 (Figs. 1 and 2) is a rearwardly extending block 60 formed with a pair of arms 6| confined between an adjustment socket collar 62 and a shoulder 63 fastened to a rod 64 which is threaded and extends down through a tapped portion 65 in a steel plate 66 attached to the bottom of the base 52. Whencollar 62 is turned for adjustment rod 64 "is moved vertieally'in the tapped. portion 65 and carries the arms 6! along therewith to rock epiatform 36 and the parts carried thereon so that the cutting point ll of the tool is rocked about "the center 56. Scribed lines I60 on shoulder 63 ccoiope'ratewithline-Jflj so that the amount of andescription that the tool '10 ie -the -"receiver::of fl gulanadjustmentncan be gauged. When the delinear adjustment by means of screw FB 'andangular adjustment by rotation 10f worm-wheel l6 and cylinder 12. A third adjustment is made possible by the sliding arrangement of bl ock i'l with respect to its support.

..:Reference .to Fig; 1. showsrtclratsthezlower part 0f:.;block.,-24 informed-neither pair :..of .dovezte-ileet 134eand :fi.tting under gibs for;holding=;the block on thetonpfiaehineedrp atform56.. .Eas-

tened to. the top; e xplatfzormfili.-;is:a.:series:;ois

ibsi 31 331 311138.. .-.shown Eig...1:three:gibs r31 extend-along .themiehtside ofsblockruandithree other ,gibs .3t8 -iextend. alongitheleft side mrtthe block 14.1fm; cooneratewith the angular. surfaces of the ;dovetail :portions; and" thereby; hold-.vthe m which-t'hera extends-a rod-s4.l:.-with a shnulderiz contacting against OnQzSidfi; of :raisedzportion: A0. Extendingiromrod: 1M isla threadedrportion (.43 engaging. in a tapped; Opening '44 :formed inz;the lower section of block 24. .rAttachedtdthe outer end-ref mod .41 .is an; adjustment swrench Isocket eollam-tfiattached tozthermd in such a. position as-ztoponfine;.the-;projectiomA6;between the .hszo. parts; -1andl2.

-In. Fig. '1', it shuwn thatecol-lar :Ai'nismro ided thexperiphery eat ithezend icooperaftingz with :the raised projection .40. This:projectionelkisrrprm vided'; with a: single :reierence line: 66 tozgprovide theifixed referenceqaointafor theadjustnrient secured byrthez rotation'ofi coliar i45. :Whenrtheco'lin lap 45 isturned;.the'screm.portion 43:(Eig;31mm gages; the tool: slide eblock andrmovesr item's-either direction towards; or :away the-workpiece: This formrsof linear a'djustment isean additiorrrto the; similar form=.'of:-adjustmenti provided b z-screw 5 l8, the latteriserving ito provide cnarse zadjustments ordinarily used preliminary .to the operw tion of the toolxwhilethersecondary fineadjustment is provided by rotationrof the screw 43 forming .the.=:adjustmerrts incidental ltorhhe actual cutting operation.

It isanentioned rh'ereinbeforezthatfplatfoa'm 36 is hinged. :In Fig.3 :the 'position: 'offith'hmgetis noted'torbe lbased-ron :the horizontalqiivot pivotill extends through:awsemhcirculartprpj ee- '55 tion :51 iformedpnzithe topxofiaa: baseii! upon which tall: the? tool'isupportingcmenfiiers are held; Also embracingzpivotfillzareia pairwfidowne wardly 'extending ears:53rfnrmed on dzl're'ifhinged platform. An opening' 54z'for1ned 'in arplatform :9

provides clearance forutheflupwa-rdly extending portion -5 I while spacedzopeningsrin 93565523310- vide-cleara-nce for thetwo t Adiustingm'eamzeia pmvidexiatonswin m' 'ikhe 'withiaiseriesofegauge linesr ll arranged around 5 .rriinsedmiatforlm 236- 119 smwxmmm pivot illg -=-s-ired-degree of -ad-justment up or down is arrived at, the hinged platform is locked in position by means of clamps cooperating with both sides of it.

In Fig. 1, it is seen that base 52 is notched to receiveea pair-0f blocks. 1 I, 51.2, :t'h-e. latter being ShQWneiIlvFig. 2r;a-s;secured:- to .theside .ofbase 52 av-impair of zscrews'l3 and". The; uppfir .end offblock. .12. extends alongside the. side i of ,platform- .36. and is formed. with; an areuate :slot 15 through which there projects aeclan ping screw 16 extending .frornthe-zside. of a hinged platform 36. ThBiSlQt. .15 zisiormedson an are taken :with reference;to the center 50 so .thatawhenthe screw 16;is.-loosened,epivotal; adjustment may. be made byrrotation of collar .62. and .then the settingmay 'b'e established by tightening screw 16 in cooperationzwith block. :12 :so that; the :hingedpl-atformis lcciiedimthez selected aneularipositionwith referencetogthe baseifl.

nAnother :zprovision for adjusting the point ..-of the .toolfi-s found ;in :the swinging .arrangement nf-thersupporting, base: 52. ;In..-.Fig, :1, it is noted that. the lowest supp rting-member Wagon which the entire xtoolfixture rests, eisiiprovided with; a pivot 1.8.1 upon .which; the ,-base 524s mounted. Base 52 .iSiIlQt'lDlllY vformed:with the circular: boss 82'; for receivingthe jpivotfi l rjcutit. is also :formed with a .series of three arcuate slots (:63, 84 and 85 .through :which theraextends aseries oi clamping screwsv 286," 8.1- :and -88; .These :last mentionedascrews; areloosenediwhen; it is desired to swing. the b38815: with-reference totthe .support- .ing memberr86. Itianoted .thatzthe .centerpivot BI is located at: or-cnear the. cutting; edge of .the tool and; in .this .waythe horizontal angular adjustments havethe :smialleist degreeiof change as effecting -the position.pi theccuttingwedge. ,Adiustmentziis :maderby. rotation of. aknurled knob 90 securedto. a wormwheel Bl whichgistpivoted inztwozupstandingiearsiu, 93iformed 0n-.a bracket secured .to; theisunpor-tingrmember .80. Co- .operatingi withtworm wheels!) I is aa :tmthed: segment 951'formed son a'a.1platev9fi. attached to the topzof base 152.. 1:11:15 obvionstthatirotation of.;knob 90 will cause angular-displacement of plate 166 to carry along therewith thesattachejd ,base'52 so :th'at:- the :base:may be mocked to -y=the desired horizontal positionuand.tthere clamped by tighten- .ing'ithe screws.- 8.6,:81g-cand 88;

In order to control and regulate the extenttdf ads ustment providedilby the :rotation :of thexknob 90, this knob is provided with-T adjustment con trol lines =tozfobserve the extentiofimovementwith reference to afixedailine'. ":KnQbeQO il'carriesm series of scribedilin'esi' H12 .nwvingcwithzreference to a single line I03 marked on the topxofi'ear 93. While there :have :been'. shown and :described amli zpointed'n'ontithe tundamentalr'novel featnres uf'itnezmvmtim asiepnliect to apmferred e n bodiment, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the following claims.

What is claimed is:

1. A tool holder comprising a sliding block,

cylindrical tool receiver mounted in said sliding block, means for clamping said cylindrical holder in said block, a Worm gear secured to said cylindrical holder, a worm wheel mounted on said block and cooperating with said worm gear, means for manually adjusting said worm wheel, an adjustment screw threaded in said cylindrical holder cooperating with the tool therein to adjust said tool linearly, a hinged platform upon which said block is slidably supported, a threaded ada justment means for moving said block relative to said platform, a base upon which said platform is hinged with the hinge under the forward portion of the tool block, means for adjusting said platform angularly with respect to said base to swing said cylindrical tool receiver in the vertical plane through its axis, means for clamping said platform in the adjusted position with respect to said base, a supporting member, said base being pivoted upon said supporting member,

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 470,010 Rhodes Mar. 1, 1892 550,937 Bauer Dec. 10, 1895 688,800 Steuer Dec. 10, 1901 1,414,970 Nelson May 2, 1922 1,795,594 Class Mar. 10, 1931 2,386,984 Scott Oct. 16, 1945 FOREIGN PATENTS Number Country Date 115,390 Great Britain May 9, 1918 

